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Interpretation of Urine Studies

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Feb 27, 2023
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ADVICE

Urinalysis for AKI

  • For acute kidney injury, start with a urinalysis before extensive testing.
  • It's a cheap, noninvasive, and informative test, sometimes called a "liquid biopsy."
INSIGHT

Urine Specific Gravity

  • Urine specific gravity can reveal hydration status and kidney function, especially in hyponatremia.
  • A high value suggests dehydration or prerenal AKI, while a low value during hyponatremia treatment may predict a sodium increase.
INSIGHT

UTI Indicators on Urinalysis

  • Leucocyte esterase, white blood cells (WBCs), and nitrites on a urinalysis suggest a UTI.
  • Nitrites indicate gram-negative bacteria, but a urine culture is always necessary to confirm and identify the specific organism.
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